Tonight, the crowds growing in times square. ABC's gio Benitez right there with them. Reporter: With just a day to go until the big game. New York City certainly feels like the center of the universe. Rowdy fans taking over super bowl boulevard, showing us who will win. Let go broncos! Seahawks! Reporter: Now the bets are on. Some bets topping the list how many times will Peyton manning say the famous call "Omaha" at the afc championships, he said it 31 times. And how long will it take Renee Fleming to sing the national anthem? Alicia keys rendition lasted 2:35 at last year's game. That was a record. Fleming giving us a clue about the big performance on game day. The high note, the hardest to hit they'll do more than once. You think they found someone this hits that octave. We'll do it a few times. Hint hint, hint hint. You heard it here. Reporter: Other fets, what will Bruno Mars wear at halftime? Bets placed on a fur hat, a fedora or nothing at all and how how the much the super bowl parties will cost you, too. Spending on game day food, clothing and decorations will hit $12 billion. A trend up over the past few years. Take a look behind my on super bowl before. There's tens of thousands of people. David only some will be lucky enough to be among the 80,000

This transcript has been automatically generated and may not be 100% accurate.

Super Bowl Snacking: Breaking Down Game Day Staples

A play-by-play of how to cut the calories on Super Bowl Sunday.

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